Loss of CCAAT/enhancer binding protein δ promotes chromosomal instability

被引:64
作者
Huang, AM
Montagna, C
Sharan, S
Ni, YJ
Ried, T
Sterneck, E
机构
[1] Regulat Cell Growth Lab, Frederick, MD 21702 USA
[2] NCI, Genet Branch, Ctr Canc Res, NIH, Bethesda, MD 20892 USA
关键词
C/EBP; tumor suppressor; mouse embryo fibroblast; chromosomal rearrangements; genomic instability;
D O I
10.1038/sj.onc.1207285
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The transcription factor CCAAT/enhancer binding protein delta (Cebpd, also known as C/EBPdelta, CRP3, CELF, NF-IL6beta) is implicated in diverse cellular functions such as the acute phase response, adipocyte differentiation, learning and memory, and mammary epithelial cell growth control. Here, we report that lack of Cebpd causes genomic instability and centrosome amplifications in primary embryonic fibroblasts derived from 129S1 mice. Upon spontaneous immortalization, Cebpd-deficient fibroblasts acquire transformed features such as impaired contact inhibition and reduced serum dependence. These data identify a novel role for Cebpd in the maintenance of chromosomal stability and suggest a potential tumor suppressor function in vivo.
引用
收藏
页码:1549 / 1557
页数:9
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